scholarly journals Animal Models as Tools to Investigate Antidiabetic and Anti-Inflammatory Plants

2012 ◽  
Vol 2012 ◽  
pp. 1-14 ◽  
Author(s):  
Mohamed Eddouks ◽  
Debprasad Chattopadhyay ◽  
Naoufel Ali Zeggwagh
Keyword(s):  
Animal Models ◽  
Public Health Problem ◽  
New Drugs ◽  
Inflammatory Activity ◽  
Global Public Health ◽  
Plant Materials ◽  
Inflammatory Mechanism ◽  
Anti Inflammatory ◽  
Materials Used

Plants have been historically used for diabetes treatment and related anti-inflammatory activity throughout the world; few of them have been validated by scientific criteria. Recently, a large diversity of animal models has been developed for better understanding the pathogenesis of diabetes mellitus and its underlying inflammatory mechanism and new drugs have been introduced in the market to treat this disease. The aim of this work is to review the available animal models of diabetes and anti-inflammatory activity along with somein vitromodels which have been used as tools to investigate the mechanism of action of drugs with potential antidiabetic properties and related anti-inflammatory mechanism. At present, the rigorous procedures for evaluation of conventional antidiabetic medicines have rarely been applied to test raw plant materials used as traditional treatments for diabetes; and natural products, mainly derived from plants, have been tested in chemically induced diabetes model. This paper contributes to design new strategies for the development of novel antidiabetic drugs and its related inflammatory activity in order to treat this serious condition which represents a global public health problem.

scholarly journals In-Vitro Anti-inflammatory Activity of Methanolic Extract of Convolvulus pluricaulis Choisy

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Puneet Singh ◽  
Yogesh Sharma ◽  
Ashutosh Sharma
Keyword(s):  
Methanolic Extract ◽  
Protein Denaturation ◽  
Inflammatory Activity ◽  
Local Market ◽  
Plant Materials ◽  
Whole Plant ◽  
Soxhlet Apparatus ◽  
Anti Inflammatory ◽  
Convolvulus Pluricaulis

Aim: In-Vitro Anti-inflammatory Activity of Methanolic Extract of Convolvulus pluricaulis Choisy. Material & Methods- The whole plant parts of Convolvulus pluricaulis Choisy were purchased from the local market. Whole plant materials were dried under shade and subjected to coarse powder for extraction process. Accurately weighed quantity of whole plant material was extracted using 95 % methanol by soxhlet apparatus for 72 h. Qualitative chemical tests of methanolic extracts were subjected to various chemical tests to detect various phytoconstituents. Solvent systems ethyl acetate: methanol: water (77:13:10) were found to be most satisfactory solvent system. After development of plates, they were air-dried and number of spots, color and Rf values were recorded. The % heamolysis was calculated by assuming the heamolysis produced by the control group as 100 %. Results: The preliminary phytochemical analysis revealed that different active constituent present in different extracts such as carbohydrates, proteins, amino acids, fat, oils, steroids, terpenoids, glycosides, alkaloids, tannins and other phenolics compounds. At a concentration of 500 µg/ml, the extract produced 71.59% protection of RBC haemolysis as compared with 72.73% produced by prednisolone.  The methanolic extract of selected plant showed 39.70% inhibition. The Diclofenac sodium showed 55.88 % inhibition against denaturation of protein. Conclusion: In conclusion, it can be stated that the methanolic extract has beneficial effects in long lasting in membrane stabilizing method, inhibition of protein denaturation method and proteinase model. Keywords: In-Vitro, Anti-inflammatory Activity, Methanolic Extract, Convolvulus pluricaulis Choisy, Protein Denaturation Method

scholarly journals Intestinal Anti-Inflammatory Activity of Terpenes in Experimental Models (2010–2020): A Review

Molecules ◽  
2020 ◽  
Vol 25 (22) ◽  
pp. 5430
Author(s):  
Maria Elaine Araruna ◽  
Catarina Serafim ◽  
Edvaldo Alves Júnior ◽  
Clelia Hiruma-Lima ◽  
Margareth Diniz ◽  
...  
Keyword(s):  
Gastrointestinal Tract ◽  
Biological Activities ◽  
Structural Diversity ◽  
Experimental Models ◽  
New Drugs ◽  
Inflammatory Activity ◽  
Bowel Diseases ◽  
Inflammatory Bowel ◽  
Anti Inflammatory

Inflammatory bowel diseases (IBDs) refer to a group of disorders characterized by inflammation in the mucosa of the gastrointestinal tract, which mainly comprises Crohn’s disease (CD) and ulcerative colitis (UC). IBDs are characterized by inflammation of the intestinal mucosa, are highly debilitating, and are without a definitive cure. Their pathogenesis has not yet been fully elucidated; however, it is assumed that genetic, immunological, and environmental factors are involved. People affected by IBDs have relapses, and therapeutic regimens are not always able to keep symptoms in remission over the long term. Natural products emerge as an alternative for the development of new drugs; bioactive compounds are promising in the treatment of several disorders, among them those that affect the gastrointestinal tract, due to their wide structural diversity and biological activities. This review compiles 12 terpenes with intestinal anti-inflammatory activity evaluated in animal models and in vitro studies. The therapeutic approach to IBDs using terpenes acts basically to prevent oxidative stress, combat dysbiosis, restore intestinal permeability, and improve the inflammation process in different signaling pathways.

scholarly journals Anti-inflammatory Effects and Safety of Extracts and Essential Oil from Clinopodium gilliesii (muña muña)

2018 ◽  
Vol 10 (4) ◽  
Author(s):  
Marcos Reynoso ◽  
María E. Balderrama Coca ◽  
Ivana Y. Brodkiewicz, ◽  
Gloria Jaime, ◽  
Marina Perotti ◽  
...  
Keyword(s):  
Single Dose ◽  
Acute Toxicity ◽  
Essential Oil ◽  
Antioxidant Activities ◽  
Clinical Signs ◽  
New Drugs ◽  
Inflammatory Activity ◽  
Anti Inflammatory

The chemical machinery of vegetables offers a great diversity of biological properties and plays a fundamental role in the field of pharmacology. The search for new drugs with fewer adverse effects represents a challenge for researchers. The objective of the present work was to carry out to investigate the medicinal properties and safety of extracts and essential oil from aerial parts of Clinopodium gilliesii (muña muña) and evaluate their antioxidant and anti-inflammatory activities in vivo. The extractions were carried out serially, using 96º alcohol (EE) and boiled distilled water (AE). The essential oil (EO) was obtained by steam dragging. The AE in vivo anti-inflammatory activity was determined by carrageenan induced plantar edema (acute inflammation) and granuloma formation by cotton disc (chronic inflammation) at oral doses of 250 and 500 mg/kg while that of the EO was established topically at doses of 50, 100μl/kg. In-vitro antioxidant activity was evaluated by DPPH depuration and inhibition of lipid peroxidation (β-carotene-linoleic acid method). Chemical study of the extracts was carried out by means of phytochemical screening and the essential oil was analyzed by GC-MS chromatography. The safety was evaluated with test of acute toxicity (48 h) and acute dermal toxicity (14 days). The results revealed that EE and EO had a significant acute and chronic anti-inflammatory activity, compared with positive patterns. EE (500 mg/kg), EO (100μl/kg), ibuprofen (100 mg/kg) and meprednisone (5 mg/kg) significantly reduced the weight of the exudate and cotton disc granuloma (24.17, 35.30, 45.56 and 57.17% respectively). The alcoholic and aqueous extracts presented important antioxidant activities with values higher than 90% (from 400μg/ml) in both methods and similar to the positive patterns (BHT and quercetin). The chromatographic profile of volatile oil compounds showed a great richness in terpene substances, pulegone, menthone and neomenthol, being its major constituents. The hydroalcoholic extracts revealed the presence of reducing compounds, polysaccharides, tannins, triterpenes, sterols and coumarins as major phytoconstituents. In the acute toxicity study, a single dose of 4000 and 8000 mg/kg b.w., produced no mortality and no clinical signs of disease were observed after 48 h. The essential oil at a single dose of 2000 and 5000 mg/kg of body weight did not produce treatment-related signs of toxicity or mortality in all rats tested during the 14 day observation period. These findings are encouraging to continue studies for the validation of popular use and development of a phytopharmaceutical with medicinal utility.

scholarly journals EVALUATION OF IN VITRO ANTI-INFLAMMATORY ACTIVITY AND HPTLC ANALYSIS OF PLANT PHYLLANTHUS FRATERNUS

2017 ◽  
pp. 198-200
Author(s):  
Biresh Kumar Sarkar ◽  
Ravi Kumar ◽  
Reeta . ◽  
S. C. Verma ◽  
Shashi Pal ◽  
...  
Keyword(s):  
Chromatographic Analysis ◽  
Protein Denaturation ◽  
Significant Inhibition ◽  
Inflammatory Activity ◽  
Alcoholic Extract ◽  
Plant Materials ◽  
Anti Inflammatory ◽  
Phyllanthus Fraternus ◽  
Analysis And Study

Objective: The present investigation evaluated in vitro anti-inflammatory activity of Phyllanthus fraternus. Inhibition of Cyclooxygenase and 5-lipoxygenase was performed along with protein denaturation.Methods: Alcoholic extract of plant was subjected to in vitro anti-inflammatory activity and HPTLC analysis.Results: The results of anti-inflammatory activity showed significant inhibition in Cyclooxygenase and 5-lipoxygenase assay, extract also showed more than 70 % inhibition in protein denaturation method. HPTLC of plant materials was also performed; spots of alkaloids were recorded.Conclusion: Different alkaloids were spotted in chromatographic analysis and study suggested that anti-inflammatory activity of Phyllanthus fraternus may be due to the presence of alkaloids. 

Anti-inflammatory activity of CD44 antibodies in murine immune thrombocytopenia is mediated by Fcγ receptor inhibition

Blood ◽  
2021 ◽  
Author(s):  
Peter Alan Albert Norris ◽  
Gurleen Kaur ◽  
Ramsha Khan ◽  
Guangheng Zhu ◽  
Heyu Ni ◽  
...  
Keyword(s):  
Immune Thrombocytopenia ◽  
Mechanistic Explanation ◽  
Inflammatory Activity ◽  
Receptor Inhibition ◽  
Inflammatory Mechanism ◽  
Igg Binding ◽  
Anti Inflammatory

Monoclonal IgG antibodies to CD44 (anti-CD44) are anti-inflammatory in numerous murine autoimmune models but the mechanisms are poorly understood. Anti-CD44 anti-inflammatory activity shows complete therapeutic concordance with intravenous immunoglobulin (IVIg) in treating autoimmune disease models, making anti-CD44 a potential IVIg alternative. In murine immune thrombocytopenia (ITP), there is currently no mechanistic explanation for anti-CD44 activity although anti-CD44 ameliorates disease similarly to IVIg. Here we demonstrate a novel anti-inflammatory mechanism of anti-CD44 that explains disease amelioration by anti-CD44 in murine ITP. Macrophages treated with anti-CD44 in vitro had dramatically suppressed phagocytosis through FcγRs in two separate systems of IgG-opsonized platelets and erythrocytes. Phagocytosis inhibition by anti-CD44 was mediated by blockade of the FcγR IgG binding site without changing surface FcγR expression. Anti-CD44 of different subclasses revealed that FcγR blockade was specific to receptors that could be engaged by the respective anti-CD44 subclass, and Fc-deactivated anti-CD44 variants lost all FcγR-inhibiting activity. In vivo, anti-CD44 functioned analogously in the murine passive ITP model and protected mice from ITP when thrombocytopenia was induced through an FcγR that could be engaged by the CD44 antibody's subclass. Consistent with FcγR blockade, Fc-deactivated variants of anti-CD44 were completely unable to ameliorate ITP. Together, anti-CD44 inhibits macrophage FcγR function and ameliorates ITP consistent with an FcγR blockade mechanism. Anti-CD44 is a potential IVIg alternative and may be of particular benefit in ITP due to the significant role of FcγRs in human ITP pathophysiology.

In Vivo Acute Anti-Inflammatory Activity of Essential Oils: A Review

2021 ◽  
Vol 21 ◽  
Author(s):  
Letícia Groli Lucca ◽  
Pedro Roosevelt Torres Romão ◽  
Márcia Vignoli-Silva ◽  
Valdir F. da Veiga-Junior ◽  
Letícia S. Koester
Keyword(s):  
Essential Oils ◽  
Inflammatory Mediators ◽  
Ex Vivo ◽  
Experimental Models ◽  
New Drugs ◽  
Inflammatory Activity ◽  
Paw Edema ◽  
Anti Inflammatory

: In recent years, there was a significant increase in the search for new therapeutic strategies for the treatment of inflammatory diseases. In this sense, natural products emerge as a potential source for the discovery of new drugs, with the research of the pharmacological properties of these products being very important. In addition to its function in plants (insect attraction and repellency), essential oils present pharmacological effects, such as antibacterial, antifungal, antimutagenic, antiviral, antiprotozoal, antioxidant, antidiabetic and anti-inflammatory properties. In this review, we describe the mostly used in vivo acute inflammatory experimental models and the studies showing the in vivo anti-inflammatory activity of essential oils. Essential oil from species from the Apiaceae, Asteraceae, Burseraceae, Boraginaceae, Cupressaceae, Euphorbiaceae, Fabaceae, Lamiaceae, Lauraceae, Myrtaceae, Piperaceae, Poaceae, Rutaceae, Verbenaceae and Zingiberaceae families were described as being anti-inflammatory in vivo. Five models of acute inflammation are commonly used to investigate the anti-inflammatory activity in vivo: ear and paw edema, pleurisy, peritonitis and the subcutaneous air pouch model. In addition to in vivo analysis, ex vivo and in vitro experiments are carried out to study the anti-inflammatory action of essential oils. The most commonly used model was paw edema, especially due to this model being easy to perform. In order to suggest or elucidate the mechanisms involved in the anti-inflammatory effect, many studies measured some inflammatory mediators such as cytokines, COX-2 expression and the levels of PGE2, and NO, or evaluated the effect of essential oils or their major compounds on inflammation response directly induced by inflammatory mediators.

In vitro Activity of Selected Ethiopian Medicinal Plants against Mycobacterium bovis and Mycobacterium tuberculosis

2021 ◽  
Vol 36 (2) ◽  
pp. 131-140
Author(s):  
Liya Woldetensay ◽  
Kaleab Asres ◽  
Gobena Ameni ◽  
Workineh Shibeshi
Keyword(s):  
Bovine Tuberculosis ◽  
Public Health Problem ◽  
Antimycobacterial Activity ◽  
Chloroform Extract ◽  
Control Programme ◽  
New Drugs ◽  
Global Public Health ◽  
Methanol Extracts ◽  
Potential Source

Tuberculosis is a major global public health problem causing ill-health in millions of the world’s population. The emergence of drug  resistant strains is a major challenge to the tuberculosis control programme. Hence, there is an urgent need for the development of new drugs. Herbs could be potential source of novel antituberculosis drugs due to their special attribute as a large source of therapeutic  phytochemicals. The objective of this study was to investigate the in vitro antimycobacterial activity of the 80% methanol extracts of  Erythrina brucei stem bark, Euphorbia candelabrum latex, Otostegia integrifolia leaf, Rumex abyssinicus root, and the chloroform extract of Vernonia amygdalina leaf on in vitro cultures of strains of Mycobactrium bovis and Mycobactrium tuberculosis. The extracts were obtained through cold maceration and soxhlet extraction, and essential oil was obtained by hydrodistillation. Macrodilution technique was used for determining the minimum inhibitory concentration (MIC) values. The MIC of the chloroform extract of V. amygdalina was 10 mg/ml against the mycobacterial strains tested. The 80% methanol extracts of E. brucei, O. integrifolia and R. abyssinicus were effective against M. bovis only with MIC ranging from 12.50 - 25.00 mg/ml. The oil from O. integrifolia was not active against the tested strains. E. candelabrum and oil from O. integrifolia failed to show antimycobacterial activity. In conclusion, the leaf  extract of V. amygdalina is proven to be the most active plant that could be a potential source for antimycobacterial agents for human and bovine tuberculosis. Erythrina brucei, O. integrifolia and R. abyssinicus displayed good antimycobacterial activity against M. bovis suggesting their potential to be sources of new compounds for bovine tuberculosis.

scholarly journals Potential role of systemic enzyme therapy with trypsin, bromelain and rutoside combination in burns

2021 ◽  
Vol 8 (7) ◽  
pp. 2254
Author(s):  
Suhas Vidyadhar Abhyankar ◽  
Arvind Madhusudan Vartak ◽  
Gautam Vinod Daftary
Keyword(s):  
Burn Injury ◽  
Healing Process ◽  
Hydrolytic Enzymes ◽  
Public Health Problem ◽  
Therapeutic Interventions ◽  
Enzyme Therapy ◽  
Global Public Health ◽  
Anti Inflammatory

Burns is a global public health problem, with a higher prevalence rate in the Southeast Asia region, including India. The therapeutic interventions mainly target the control of complications following burn injury and assisting in physiological recovery. However, the excessive inflammatory changes and loss of immunological integrity, seen in burns patients, interfere with the healing process. An orally applied formulation composed of hydrolytic enzymes (bromelain, trypsin) and the flavonoid rutoside has a long history of use as natural anti-inflammatory agents. This combination has been found to exert anti-inflammatory, anti-thrombotic and antioxidant effects through myriad mechanisms that include favorable modulation of inflammatory mediators, enhancement of plasmin levels, reduced leukocyte migration to injury site and suppression of the formation of reactive oxygen species. These actions have been demonstrated in multiple in vitro and animal models. Further, the beneficial effects of the combination on inflammatory markers have been reported from multiple clinical studies. This review provides a discussion of the current understanding of cellular mechanisms and pathways involved in burn injury and the evidence highlighting the beneficial role of systemic enzyme therapy with trypsin-bromelain-rutoside combination in the management of burn injury patients.  

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